Charles henry yeale



llnrrn Parent t rrent CHARLES HENRY VEALE, OF CORK, IRELAND.

LlTi-IOGRAPHERS TRANSFER-PAPER.

SPECIFICATION forming part of Letters Patent No. 625,524, dated May 23,1899.

Application filed January 5,1899. Serial No. 701,248. (No specimens.)

To (all whom it mity concern:

Be it known that I CHARLES HENRY VEALE, foreman lithographer, a subjectof theQueen of Great Britain, residing at 124 St. Patrick street, Cork,Ireland, have invented certain new and useful Improvements in orRelating to Lithographic Transfer-Paper and Method of Preparing aCoating for the Same, of which the following is a specification.

The object of my invention is to provide a new or improved compositionor coating for paper to be used for lithographic purposes whereby anylithographic printer by a uniform method of treatment will be enabled tosuccessfully deal with all classes of moist transfer-work by one paperadaptable to the three purposes for which such paper is requiredviz.plate to stone, stone to stone, (including crayon or grained work), andtype to stone-instead of using a special paper for each processrequiring different experience and treatment.

According to my invention in operating upon (for example) an average oftwo reams of demy paper measuring twenty-two and one-half inches byseventeen'and one-half inches with eight to nine pounds coating per reamwhen dry I employ the following ingredients in preparing the compositionfor the coating: first, six and one-half pounds of fine wheatpastry-flour boiled in twenty-four pints of water, with which, whenboiled, one gill of purified earbolic acid is mixed; second, sixteenpounds of French mordant-White, barium sulfate,'and half an ounce ofvermilion mixed in one pint and a half of No. 2 pure glycerin, and,third, two pounds of refined plaster-of-paris beaten up in about eightpints of water and allowed to stand over night, afterwhich I pour offand discard the surplus water standing on the surface. Six ounces ofRussian glue is then added, and the mixture of glue and plaster raisedto a boiling heat. The whole of the ingredients (except the flour) arethen mixed and well ground. The boiled flour is then added, well mixed,and the mixture strained. The composition is then ready for coating thepaper and is applied to the paper by a paper-makers enameling-machine.

The drying of the paper when coated is effected in the same way asenameled paper namely, by the heated atmosphere of the enameling-room.

The transfer-paper prepared according to the above prescriptionpossesses the following advantages: It does not harden or deteriorate byage, it imparts tothe work in operation the qualities of added andpermanent strength, it renders impossible a spread or other imperfect.results, and by the concentration in one system of treatment for allmoist transfers it simplifies the whole process and gives confidence tothe operator by its uniform success.

My composition differs from others principallyin the use of the Frenchmordant-white or barium sulfate, which is perfectly insoluble, while theglycerin prevents hardening by age and sustains its keeping qualities.

I have stated the best proportions of the parts for use in thiscomposition; but the proportions may be somewhat varied Withoutdeparting from my invention, and I do not therefore limit myselfprecisely to the proportions herein set forth.

WVhat I claim as new, and desire to secure by Letters Patent, is-

1. A new or improved composition or coating for lithographictransfer-paper, consisting of pastry-flour, earbolic acid, Frenchmordant-white, Vermilion, glycerin, refined plaster-'of-paris andRussian glue, the ingredients being mixed in or about the proportionsspecified and prepared substantially as herein set forth.

2. As a new article of manufacture lithographic transfer paper having acoating formed of fine wheat pastry-flour, carbolic acid, Frenchmordant-White, Vermilion, glycerin, plaster-of-paris and Russian glue,the ingredients being prepared and mixed in or about the proportionsspecified and applied to the paper, substantially as herein set forth.

3. The method herein described for preparing a composition or coatingfor lithographic transfer'paper to be used for moist transferwork of allkinds, consisting in the following treatment of ingredients in theproportions substantially as specified: first, boiling six and 0ne-halfpounds of fine wheat pastry-flour with twenty-four pints of Water, andadding, when boiled, one gill of purified carbolic acid; second, mixingsixteen pounds of French morto the ground ingredients, mixing the samethoroughly and finally straining the entire composition.

In testimony whereof I have hereunto set I 5 my hand in the presence oftwo subscribing witnesses.

OHAELES HENRY VEALE.

Witnesses:

TIMOTHY DINNEEN, JOHN COTTRELL.

